Dehydrator



F. G. SLAGEL Jan. 5 1932.

DEHYDRATOR Filed July 29, 1929 fIEIl 1 l6 zz 15 gwuentov Patented Jan.5, 1932 UNITED STATES PATENT OFFICE FRANKLIN G. SLAGEL, OF BUFFALO, NEWYORK, ASSIGNOR TO FEDDERS MANUI'ACTUB- ING COMPANY, INC., OF BUFFALO,NEW YORK, A CORPORATION OF NEW YORK DEHYDRATOB Application filed July29, 1829. Serial No. 381,977.

This invention relates to refrigerating systems and more particularly todehydrators. An object of the invention is to rovide a unit structurewhich can be readi y associated in the circuit of a refrigerating systemfor absorbing water from the refrigerant in its cyclic traveltherethrough. 1

Another object of the invention is to provide a unit structure which canbe readily 1 associated with and detached from the circuit of arefrigerating system for filtering the refrigerant in its cyclic traveltherethrough.

A further object of the invention is to pro- 15 vide a dehydrator forrefrigerating systems which is formed of sections which are removablysecured together so that a filter and calcium chloride can be removedand renewed.

Other objects of the invention will be apa parent as the description ofthe invention progresses.

In the accompanyin drawings, Fig. 1 is an elevation of one en of a deydrator incorporating the invention; Fig. 2 is a longitudinal medialsectional view of the dehgdrator; and Fig. 3 is an end elevation of t eother end of the dehydrator.

Referring now to the drawings by characters of reference represents thebody of 39 the deb drator which preferably formed as a cy indrical casinhaving an end wall 11 having an internal y threaded inwardly extendingcircular flan e 12.

A filtering unit pro ects through and is secured in the end openingformed by the threaded flange. Such unit includes a hollow supportingmember 13 having a circular open portion .14 threaded externally andadapted to screw into the threaded flange of the housing. The supportingmember has a shoulder 15 for limiting the insertion thereof into the endof the housing, and the portion 16, adjacent the shoulder, is formed inhexagonal shape for the application of a wrench when the unit is to beapplied to or removed from the housing. The outer end 17 of thesupporting member is flared and threaded so that a conduit in therefrigerant circuit of a refrigerating system can be readily attached 50thereto.

The supporting member 13 carries filtering means, and to this end aperforated anchor plate is soldered within the hexagonal portion 16. Acylindrical screen 19 havin a cloth cover 20 is seated within thethreaded end 14 of the housing and a cap 21 is arranged to cover theother end of the screen. A rod 22 is soldered to the central portion ofthe anchor plate and the other threaded end thereof projects throu h thecap 21, a nut 23 being screwed on t e end of the rod to clam the screenwith the su porting member. he screen is filled by t e spon e 24. Itwill be seen that by removing t e nut, the cap and screen and its covercan be removed from the supporting member so that the sponge can becleaned or removed. The unit is soldered to the end of the casing, asindicated at 25, and the solder is of a slight amount so that the jointcan be broken by unscrewing of the supporting member.

The other end of the casing supports andis closed by another combinedfilter and union. A cap 26 is provided with a threaded flan e 27 whichis screwed upon the open end of t e casing member 10, a portion 28 ofsuch cap being hexagonal for the reception of wrench. The end 29 of thecap is formed as a threaded nipple for attachment in thecircuit of therefrigerating circuit. The end of the casing is turned inwardly forminga flange 30 which is threaded, and a portion 31 of the cap is threadedso that a soft metal washer 32 will lie adjacent it and the threadedflange of the casing. As the cap is screwed'on the end of the casing,the washer will be clam d between such adjacent threaded portlons toform a leak proof joint. A cu member 33 projects into the end of the b0y and has a flange 34 overlying the flange 30 and held in position bythe sponge 35 which fills the space between the cap and the cup member,the major portion of the inner wall 36 is open and a removable screen 37seated within the cup member covers the opening.

By unscrewing the cap member 26, the sponge can be removed and cleanedor replenished, and if desired the cup member and screen can also beremoved. The space in the cylindrical body unoccupied by the filteringdevices is filled with calcium chloride, and by removing either one orboth of the filtering devices the calcium chloride can be removed fromthe body and a new supply added. Refrigerant flows through the filteringdcviccs and the calcium chloride when the structure described isinserted in the circuit of a refrigerating system in which refrigeranttravels in cycle, water being ab sorbed therefrom by the calciumchloride and foreign particles being removed from flowing in the circuitby the filters.

Various changes can be made in the details of the structure describedwithout departing from the spirit of my invention and the scope of theclaims.

What I claim is:

1. In a purifier for a refrigerating system, a calcium chloridecontainer, a pair of means for connecting the container in therefrigerant circuit of the s stem, and refrigerant filter means in each0 said connecting means.

2. In a purifierfor a refrigerating system, a container adapted to befilled with water absorbing material, removable inlet and outlet membersconnecting the container in the refrigerant circuit of the system, andfilter means carried by each of the connecting members, said filtermeans being removable from the container.

3. In a refrigerant purifier adapted to form part of a conduit forrefrigeratmg systems, a cylindrical container having an end wall andadapted to contain a water absorbing material; and a unitary filteringunit extending through the end wall of the container, said unitcomprising a hollow supporting member screwed into the container endwall and having a conduit receiving exterior end, a screen partiallytelescoping the inner end of the supporting member, anchor meansengaging the inner end of the screen detachably securing the screen tothe supporting member, and a sponge filling the interior of the screen.

4. In a refrigerant purifier adapted to form part of a conduit forrefrigerating systems, a cylindrical container ada ted to contain awater absorbing materia said container having an apertured end wall; ahollow supporting member screwed into the container end wall and havingan exterior end adapted to be secured to a conduit, and filtering meansassociated with the end of the supporting member and extending into thecontainer, said filtering means being removable from the container withthe supporting member and detachably carried by the supporting member.

5. In a refrigerant purifier adapted to form part of a conduit forrefrigeratmg systems, a cylinder adapted to contain a water absorbingmaterial, and a pair of removable filter containing outlet membersconnecting the ends of the cylinder in the system, one of said memberscomprising a tubular supporting member screwed into the end of thecylinder, a rod fixed to and extending axially through the inner end ofthe supporting member, a. tubular screen telescoping the portion of therod projecting from the end of the supporting member, a cap on the projecting end of the rod, and removable means associated with the rod tosecure the cap against the screen, said cap holding the screen againstthe inner end of the supporting member.

In testimony whereof, I have hereunto signed my name this 16th day ofJuly, 1929.

FRANKLIN G. SLAGEL.

